Combo kit of Both the SSPFT.250 1/4″ AND SSPFT.500 1/2″ diameter Specialized spiral flush trim bits. These are designed with a reduced helix angle which gives less heat and a less aggressive cut vs our standard spiral flush trims.

This means a smoother cut and lower chatter and vibration .

Not only does it work excellent in MDF/Birch and Hardwoods but it has a definite advantage in Plastics and Aluminum over traditional bits.